Pipe reamer



April 21, 1925. 1,534,908

D. H. BROWDER PIPE REAMER Filed Feb. 11. 1922 INVENTOR W 5 ATTORNEY WITNESSSS Patented Apr. 21, 1925..

PATENT QF'FH QE.

DAVID H. BROWDER, O F LAWRENCEVILLE, VIRGINIA.

-IPIPE BEAT/KER.

Application filed February l1,-1922.- Serial N0.'535,876.

To all whom it may concern:

Be it known that 1, DAVID H. BnowoER, a citlzen of the United States,residing at Lawrenceville,inthe county of Brunswick and-State ofVirginia, have invented new anduseful Improvements in Pipe Reamers,

of which the following is a specification.

In injectors for locomotives, etc., it is absolutely necessary that afluid tight jointbe providedloetweenthe injector and the pipes connectedthereto. Therefore the jointsvbetween the bosses or nipples of theinjector and the pipes therefor are ground, the bosses or nipples havingtheir ends flarediin one direction and the pipes having their endsflared in an opposite direction, while unions are provided forconnecting the-pipesand nipples. Becauseof the necessary accuratecontacting engagement of the pipe with the boss-or nipple .care mustbetaken in grind- 1 ing or facingthe joints therebetween, and; in themajority of instances'it is necessary toreinovetheinjector.infacing thebosses or nipples thereof.

The primary object of the present invention is to produce a tool forfacing the joints between an in ector andthe pipesconnected therewith,which can be readily secured on the in ector wlthout the removal thereofand which likewise can be readily secured on the pipes to be connectedto theinjector,,;and wherein the joints ofthese members can be faced inan easy, accurate and expeditious manner without unnecessary physicalexertion.

, It is a further object to produce afacing tool for joints of injectorsand pipes connected thereto which shall include means for clamping thesame on the injector or on the pipe, a frame. being secured on. saidclamping means and having ranged on the fra1ne,;and in contact with thecutter head there is a feed element ad-.

justable onthe frame to, direct the headto its work.

A still further object is to produce a facing tool for this purposecharacteristic of simplicity in construction, lightness in weight andease and accuracy in operation.

The foregoing, and other objects which will appear as the nature of theinvention is better understood, may be accomplished by a construction,combination and operative j ournaled thereto a shaft to which the cutterhead is connected, a removable handle being pro-= vided for operatingthe shaft, while, ar-.

association of parts such as is disclosed by thedrawings which accompanyand which formpart of this specification.

In the drawing:

-Figure lis. an elevation illustrating :the application oftheimprovement.

Figure 2 is a similar view taken at right angles to the showing inFigure l, .the handle for the shaft being removed.

Figure 3is a sectional view approximately ontheline 33 ofFigure 2.

I Figure 4c is a bottom plan view of the improvement.

1 Figure 5 is a side elevation of one of the cutter heads.

1' Figure 6 is a sectional view of. a joint betweentheboss or nipple of.an injector. and the pipe therefor.

; Referringnow to the drawings in detail, the numeral. 1 designates 1 ashaft- -which passes centrally through a rounded opening provided in asubstantially U-shaped frame 2. The outer end of the shaft 1 is squaredfor the reception of the socket end of a removable handle 3. fThe innerend of the shaft 1 is reduced and threaded, as at 4: whereby thesame mayhave screwed thereon cutter heads 5 or 6. The-cutter heads are round inplan, the cutter head ahaving its active;face concaved andprovided withradial teeth which terminate a suitable distance awayfrom its center.The cutter head 6 hasits active face convex and provided withradial-teeth which also terminate away fromits center.

.The opening in the frame 2, through which the shaft 1 passes, isof amaterially greater area than the cross sectional diameteiaof the shaft,the said opening being threaded, and screwed through the said openingvthere is, a follower member 7 The follower is in the nature of anexteriorly threaded tube,-the bore of the said tube re ceiving:therethrough theshaft' 1, and providing a bearing for the said. shaft.The outer end of the follower isprovided with right .angularly arrangedprojections fornr ing the same with handles 8,.whereby the follower maybe screwed through the frame to contact with the cutter head to forcethe same to its work.

The parallel arms of the inverted U- shaped frame 2 have their endsreduced, rounded and threaded. For distinction the reduced ends areindicated by the numeral 9, the same passing through openings in theends of the clamp member 11 there is pivotally secured a link 16 whichis also received in a slot or opening in one of the straight ends of theclamp member 13, a pivot 17 securing the link in the said end of theclamp member 13. In this manner the clamp members or sections 11 and 13are hingeclly connected, and also in this manner the clamp section 13may be swung outwardly to a position approximately parallel with theclamp member or section 11. The opposite straight end of the clampmember 11 has pivoted therein a bolt member 18 which is designed to beswung through a slot or opening 19 in the second end 1 1 of the clampmember or section 13. The bolt 18 is engaged by a winged nut 20 which,when adjusted will hold the clamp sections assembled and the same intight engagement with the collar or sleeve which is brazed or welded onthe end of a pipe 21, or on the boss or nipple 22 which is integrallyformed with the injector. The boss or nipple 22 is provided withexterior threads, and the outer end of the enlargement on the pipe 21 isformed with an outwardly projecting flange. The outer end of this flangeis designed to be engaged by the teeth on the cutter head 5, asdisclosed in Figures 1 and 2 of the drawing, while the outer end of theboss or nipple is faced by the cutter head 6.

The flange on the enlargement of the pipe 21 is designed to be contactedby th inner flanged end of the union which is screwed on the threadedboss or nipple to force the joints between the pipe and nipple to tightengagement.

The elements constituting my improvement may be readily separated toprovide a small package for storage or shipment.

It is thought that the foregoing description, when taken in connectionwith the drawing will fully set forth the construction and operation ofthe improvement to those skilled in the art to which such invencutterheads will be positively arranged in Y proper position to operate on thepipe. The handle is turned by one hand of the operator, the other handbeing employed for adjusting the follower 7. Vhen the joint is faced,the follower is turned in a reverse direction which permits of the shaftand the cutter head carried thereby being moved away from the joint. Thethreads on the end 4: of the shaft are pitched in the direction of theturning of the handle 3., so that such turning, when the cutter head isin operative position will have the effect of screwing the said cutterhead more tightly v on the handle.

Having described the invention, I claim 1. A reamer comprising a pair ofcomplementary clamp sections adapted to embrace one end of a tubularmember to be reamed, means for locking the sections together on thetubular member, a U-shaped element having its ends passing transverselythrough the ends of one of the clamp sections, nuts threaded upon theends of the U-shaped member, an adjusting member threaded through thecrest of the U-shaped member and having a central bore, a shaftrotatable and slidable in the bore of the adjusting member, and a reamerelement carried by the end of the shaft.

2. A reamer comprising a pair of hingedly connected clamp sectionsadapted to embrace one end of a tubular member" to be reamed, means forlocking the sections together on and about a tubular member, a U-shapedelement fixedat its ends to and extending at right angles from the endportions of one of theclamp sections and having a centralthreadedaperture, a central tubular and exteriorly threaded memberdisposed in said aperture, a shaft rotatable and movable reotilinearlyin said tubular member, and a reamer element carried at the inner end ofthe shaft.

In testimony whereof I affix my signature.

DAVID H. BROWDER.

